Weird, is there even a definitive chart of the segments that went for each party (and for third party)? With Obama punking the Catholic church the way he did, and all the bristling about it that took place in the pulpits the Sunday prior to election day, are you saying the proportion went UP from 2008?
There are huge swathes of non/irregular-attendee Catholics who are almost entirely liberal, some of whom applauded Obama's attack on the Church.
We'll see in a few months I guess what the exact tallies are.